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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=dfa-jump-threading,sccp,simplifycfg %s | FileCheck %s
; This test checks that a constant propagation is applied for a basic loop.
; Related to bug 44679.
define i32 @test(i32 %a) {
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: ret i32 3
;
entry:
br label %while.cond
while.cond:
%num = phi i32 [ 0, %entry ], [ %add, %case1 ]
%state = phi i32 [ 1, %entry ], [ %state.next, %case1 ]
switch i32 %state, label %end [
i32 1, label %case1
i32 2, label %case2
]
case1:
%state.next = phi i32 [ 3, %case2 ], [ 2, %while.cond ]
%add = add nsw i32 %num, %state
br label %while.cond
case2:
br label %case1
end:
ret i32 %num
}
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